Windshield defroster



May 4, 1937- c. F. FAGERBURG 2,079,203

wiNDsHIELD DEFROSTER Filed Feb. 28, 1936 Patented May 4, 1937 2,079,203

UNITED STATES PATENT lOFFICE wnmsmnm nEFnos'rEn Carl F. Fagcrburz. Chicago, Ill.

Application February 28, 1936, Serial No. 66,196

s claims. (ci. ss-zi My invention relates to devices for automatical- 'Ihe specic form of my invention which I have ly defrosting the windshields of automobiles or illustrated in the drawing is particularly intended other vehicles, and the principal objects of the for use with automobiles wherein the side windows invention are: to provide a defroster of this type may bev opened by moving the side window glass which shall utilize a draft or blast of air induced rearwardly. This manner of operation of the 5 by the motion of the vehicle for accomplishing side windows is exemplified in the current closed the defrosting actiomand to provide a defroster models of the Ford and Plymouth automobiles. which shall be simple in design, which shall uti- The angle members 3 which define, in effect, a lize no moving parts whatsoever, and which shall spring clamp, are adapted to engage the forward 1o be inexpensive to manufacture and convenient to vertical edge of one of the side window glasses 10 install and use. (indicated at 2 in Fig. 1), and are arranged par- Other objects and advantages of my invention allel to the transverse axis of the deflector in will be understood by reference to the following order that the deflector when in use shall be inspeciilcation and the accompanying drawing clined from the horizontal, thereby deilecting the l5 wherein is illustrated a preferred embodiment current of air produced during the operation of 15 thereof. the defroster upwardly. This upward inclina- In the drawingtion of the deflector is of great value in securing Fig. l is a schematic view showing a defroster proper directing of the air current when the dein accordance with my invention as applied to an nector is used in conjunction with a window glass automobile; having a rearwardly sloping front edge, as is coi- 20 Fig. 2 is an enlarged plan view of the defroster mon in many vehicles of the type to which the illustrated generally in Fig. 1; present invention particularly relates. The gen- Fig. 3 is a rear elevation of the defroster shown eral direction of the air currents is indicated by in Figs. 1 and 2, and the arrows in Fig. 1. Other methods of mounting Fig. i is a perspective view of the defroster. are of course within the province of my inven- 25 In the form of my invention illustrated in the tion. n drawing, the defroster consists of a suitable de- The amount of air introduced into the vehicle flector member i and means for mounting that by the deilector may be easily controlled by mov. member in an operative position uporr the vehicle ing the window glass forwardly or rearwardly.

with which it is used, as is shown particularly in Thus, during use of the defroster, the amount of 30 Fig. 1. The defiector member is so arranged that cold air introduced into the vehicle by the deforward movement of the vehicle produces a blast froster can be reduced to the minimum possible or current of air which is directed upon the inside amount necessary to accomplish the defrosting of surface of the windshield of the vehicle. the windshield.

Preferably the deflector member i comprises From the foregoing, it will be seen that I have 35 an oblong shaped piece of relatively thin, iiat, provided a novel form of defroster particularly sheet material, which may be of aluminum or suitable for use with certain of the more popubrass or other metal, and which is curved longilar types of automobiles. The defroster of my intudinally so as to denne asubstantially cylindrical vent-,ion is extremely simple in design; it utilizes surface. The longitudinal axis of the defiectol' no moving parts whatsoever; it is entirely auto- 40 member is inclined at a substantial angle to the matic in its operation; and it may be manufactransverse axis of that member in order that the tured at a very low cost. Further, the device air currents produced by the deector shall be is convenient to install, and the magnitude of the directed upwardly across the windshield. Excurrent or blast oi air which accomplishes the pressedr somewhat differently, the deflector memdefrosting action may conveniently be adjusted 45 ber comprises, in effect, a section of a ribbon by movement of the window glass upon which the helix. defroster is preferably supported. In addition,

The means for supporting the deflector in an the device may be readily removed when its use operative position on the vehicle with which it is not necessary, and it serves to aid in Ventilating is used may comprise a pair of opposed angle the interior of the vehicle in addition to accom- 50 members 3, at least one of which is preferably plishing the defrosting action. formed of spring material, and both of which are While in accordance with the patent statutes, riveted or otherwise securely aiiixed to the central I have illustrated a specific form of my invenportion of the convex side of the deflector memtion, it will be understood that various modificaber proper. tions thereof can be readily made, and it is my 55 intention that the accompanying claims shall be construed as broadly as possible consistent with the state'oi the art.

I claim the following as my invention:

1. In a windshield detroster for use with a vehicle having a windshield and a side window which may be opened by moving the side window glas rearwardly, a deilector which causes a current of air to be created by movement of the vehicle and which directs that current of air onto the windshield. said deilector comprising a unitary, relatively thin-walled, curved member,

and means for mounting said deilector upon the l front vertical edge oi a side window glass ot the vehicle with which it is used ln order that said deilector may be adjusted by moving the side window glass.

2. A defroster for use with an enclosed vehicle having a windshield and a side window which may be opened by moving the side window glass rearwardly,`comprising an oblong member of hat sheet material which is curved so as to denne substantially a portion of a ribbon helix, and means for supporting said member upon the forward vertical edge ot the side window glass of the vehicle with which said member is used in such manner that the longitudinal axis oi' said member shall be inclined upwardly in the direction of said windshield.

3. In a windshield defroster for use with a vehicle having a windshield and a side window glass which may be opened by moving the side window glass rearwardly, a deector which causes a current of air to be created by movement of the vehicle and which directs that current of air onto the inner surface oi' the windshield, said deilector comprising an oblong member of ilat sheet material which is curved so as to denne a substantially cylindrical surface, and means for releasably mounting said`deilector member upon the front vertical edge of a side window glass of the vehicle with which it is used in such manner that the transverse axis ot said membershall extend in a generally vertical direction, and the longitudinal axis of said member shall be inclined upwardly in the direction of said windshield.

CARL F. FAGERBURG. 

